Thill-coupling jack



(No Model.)

J. H. MILLER.

THILL GUUPLING JACK.

180.1108921. 1988811888 Aug. 18, 1889.

f if 0% e llll Il ATTUH/VEY UNITED STATES i nPATENT OEEIcE.

JOHN I-I. MILLER, OF LEWISTOWN, PENNSYLVANIA.

THILL-COUPLING JACK.

SPECIFICATION forming part of Letters Patent No. 408,921, dated August 13, 1889. Application led June 8, 1889. Serial No. 313,606. (No model.)

To all whom t may concern:

Be it known that I, JOHN H. MILLER, of Lewistown,in the county of Mifflin and State of Pennsylvania, have invented a new and useful Improvement in 'Phill-Coupling Jacks, of which the following is a specification.

The object of Iny invention is to provide a device for facilitating the operation of applying or removing the thills of a carriage, buggy, or wagon. It is customary in most vehicles of this class to insert between the shackle-iron of the thills and the clip on the axle a cushion' of rubber to prevent rattling at the joints, and in inserting this springcushion it is necessary to compress it in its seat, while the shackle is being held with its hole in line with the holes in the ears of the clip, and to do this and at the same time hold the thills and insert the bolt is an awkward and difficult job.

My invention is designed to expedite and facilitate this operation; and to this end consists in the peculiar construction and arrangement of a hand-tool operating as a jack, which I will now proceed to fully describe.

Figure l is a .side elevation showing the application of the tool to the thills and the axle in connecting the thills thereto. Fig. 2 is an edge view of the tool, and Fig. 3 is a detail of lever A.

X is the axle, provided with the usual clips formed with perforated lugs or ears L.

R -is the rubber cushion between the lugs; T, the thills or shafts; and S, the shackle-iron ,whose opening or eye is to be brought into registration with the perforation in the lugs L, and for which purpose it is necessary to compress the rubber cushion R with considerable force. To effect this operation and hold the parts in proper position, I have provided the device A B O D, of which A is a hand-lever, which is jointed at F to the linkbar B, and which latter is at its end jointed to both the stirrup-shaped clamp C and the dog D. The clamp O has at its lower end a foot C', projecting at right angles to the body portion, which foot is adapted to rest beneath the shaft near the shackle, and, in connection with the dog D, which rests above the shackle, securely holds it. The lower end of the lever A is placed behind the axle to secure a ful'crum-point, and then the upper end of lever A is forced to the rear and carries with it the link-bar B, the clamp, and the thill, until the shackle of the thill has sufficiently compressed the rubber cushion to bring the bolteholes into registration. The bolt is then inserted and the jack removed.

To adapt the device to different sizes and shapes of thill, the bar B is made adjustable in its connection to the lever A by a series of holes, which holes are elongated or formed as slots adapted to receive the T-headed stud F, (see Fig. 2,) which is formed on lever A and constitutes the axis of articulation. This stud Inay be removed from and inserted in any of the holes by having the longitudinal axis of its head turned lengthwise the slots. Then after the lever A is turned back the lever and link-bar are loosely but securely held together by the overlapping of the head of the stud upon the metal of the lever along the edges of the slot.

To reduce the number of parts, the joint at E is also made by means of a stud formed on the clamp C, instead of using a separate axial bolt.

I am aware that a jack has been heretofore provided for applying the thills to the axle-clip in which a clasp, link-bar, and lever were combined, and I therefore only claim my peculiar construction and arrangement of parts.

NV is a wrench formed upon the end of leverA, which I iind to bea great convenience.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The thill-coupling jack consisting of lever A, link-bar B, having an adjustable connection with the lever, the clamp C, with foot C', and the dog D, the said dog and clamp being connected to the end of the link-bar upon a single axis of articulation, substantially as shown and described.

2. The combination of the lever A, with a headed stud F, link-bar B, with a series of elongated holes, the clamp C, with foot C', and the dog I), both dog and clamp being pivotally connected to the link-bar by the same axis of articulation, substantially as shown and described.

IOO

3. The Combination of the lever A, link- The above Speeention of my invention blt B, pivot-ally connected thereto, the Clamp signed byme in the presence of two subscrib- C, having foot C at one end and Stud E at ing witnesses.

the other, and the dog` D, the said dog,` and JOHN II. MILLER. 5 bin. B being jointed or :ntieulated upon the Witnesses:

stud E, substantially as and for the purpose EDWD. NV. BYRN,

described. SoLoN C. KEMON. 

